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Alternative male life histories in Bluegill Sunfish


Please use this identifier to cite or link to this item: http://hdl.handle.net/1928/1670

Alternative male life histories in Bluegill Sunfish

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Title: Alternative male life histories in Bluegill Sunfish
Author: Gross, Mart; Charnov, Eric
Subject: sexual selection
breeding systems
parental care
frequency-dependent selection
Abstract: Male bluegill sunfish are shown to have two alternative mating strategies: cuckoldry or parental care. Cuckolder males first mature at age 2. They follow a developmental sequence of sneaking and then mimicking female behavior to deceptively gain access to spawnings. Males who become parentals (construct nests, attract females, provide brood care) delay maturation until age 7. The parental investment of these males is parasitized by the cuckolders. This system is an example of a truly parasitically dependent mating strategy in vertebrates. A natural selection model is developed to predict the equilibrium frequencies of the two male types. A preliminary test of the model provides qualitative agreement.
Date: 1980-11-01
Publisher: National Academy of Sciences
Citation: Gross, M.R. and E.L. Charnov. 1980. Alternative male life histories in Bluegill Sunfish. Proceedings of the National Academy of Sciences USA 77:6937-6940
URI: http://hdl.handle.net/1928/1670

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